Manufacture of artificial filaments, threads, and the like



Aug. 15, R H R L Y 1,922,715

MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, AND THE LIKE Filed Aug. 26, 1930 REGINALD HI RILEY INVENTDH X I ATTORNEYS Patented Aug. 15, 1933 Q i r MANUFACTURE OF ARTIFICIAL FILAMENTS,

' THREADS, AND THE LIKE Reginald Henry John Riley, Spondon, near Derby, England, assignor to Celanese Corporation of America, a Corporation of Delaware Application August 26, 1930, Serial No. 477,838,

1 and in Great Britain June 5, 1930 3 Claims. (01. 18-8) This invention relates to apparatus for the securing the first jet to the supply pipe or memmanufacture of artificial silk and other artificial her; or the supply pipe or member, or the means 7 filaments, threads, ribbons, straw, or the. like, for securing the first jet thereto, may be modified (hereafter referred to as filamentsU, and is to receivethe means for attaching the second 5 especially applicable to apparatus for the manujet. The second jet is preferably arranged to fit facture of such materials by the dry or evaporaclosely to the first jet, and the filtering of the spintive method of spinning. 1 ning solution is preferably effected, before the The object of the invention is to enable two solution arrives at the first jet. jets or nozzles to be used in series on a single pipe 'The mounting of a second jet in series with the 1 or member for supplying spinning solution to the first in such a manner that it can be removed jets or nozzles. and replaced without interfering with the first British patent application No. 27,042/29 filed jet enables the second jet to be removed without th September 1929, or the corresponding U. S. loss of pressure, wastage of spinning solution, application 5. No. 476,304 filed August 19; 1930 or other inconveniences usually attendant upon describes in detailtwoforms of means for removremoving the spinning jet. The first jet serves I ably connecting one jet or nozzle in series with as a pressure retaining member after removal another, the two forms comprising respectively of the second jet and is formed with one or more anattachment adapted to be clamped on to the holes of sufiicient total area to enable the second means for securing one jet or nozzle to its supply jet to receive an adequate supply of spinning so- 20 pipe or member, and an attachment adapted to lution. The total area of said hole or holes is be screwed on to said securing means. preferably such that the pressure in the supply The present invention comprises a further form pipe or member remains approximately the same of means by which one jet or nozzle can be seafter removal of the second jet as when it is in cured to or removed from the supply pipe or use. For examp the first le y b provided 125; member for the spinning solution without interwith a single hole of slightly greater area than the 80:

fering with the attachment of the jet or nozzle total area of the orifice or orifices of the second to which the solution is fed directly from the je he fi st l w Serve as an supply pipe or member. ditional filtering means for the spinning solu- The jet or nozzle (hereafter referred to as the tion, in which case it may be provided With a first jet) to which spinning solution is fed din mber f h les n t subs nti lly r r th 3 rectly by the supply pipe or member may be and preferably considerably smaller than, the formed integrally with or detachably or othero fi in the ec l twise attached to the supply pipe or member. The app tus y, moreover, be employed a Conveniently it takes the form of a perforated a impl means f h n h character of as; metal disc or cup which may be attached by a the pr p n, i h r a regards the n m on. union or like engaging with thesupply pipe or of filaments extruded or their denier, or both, member or with a member attached thereto, or it y all win h fir t j to be u as a p in may be soldered or brazed thereto, jet through which one or more relatively large The jet or nozzle (hereafter referred to as the fi a s O a p u a y of fi Very fi fi second jet) in series with the first jet may be of ments are extruded, and then attaching a second any convenient form, as for instance a perforatjet to. Serv as, a Spinning l for the eXtruSiOn ed metal disc or cup, and is secured to the supof one or more relatively large filaments or a ply pipe or member by an attachment which is plurality of fi Very fine filaments of id over the first jet and locked in position by ferent denier and/or number from those extruded 45. spring-pressed balls or plungers or by set screws t ough t e firs l t. Thus, the fi l y which engage the supply pipe or member or a, be arranged to spin a thread consisting of a member fitted thereto or a union or the like by number of fine or very fine filaments and by which the first jet is attached to the supply pipe attaching a second jet, having a suitable number or member. These means enable the second jet of spinning orifices which may be round, slit- '50," to be very quickly removed and replaced withshaped or otherwise formed, the output may be out interfering with the first jet. changed to relatively few filaments of fairly high The means for attaching the second jet to the denier, or even to a single high denier filament. supply pipe or member may be so arranged as to One form of jet fitting and attachment acpermit of the attachment without requiring any cording to the invention is illustrated in the 5. modification of the means usually employed for accompanying drawing, but it is to be understood that this, together with the following description, is given by way of example only, and is in no way limitative.

Fig. 1 is a plan view, partly in section, of the jet fitting which is shown, also partly in section, on the right-hand side. of Fig. 2, the left-hand side of Fig. 2 showing a slight modification of the fitting.

The first jet 15 is attached to the supply pipe 11. by means of nuts 12, 14. The second jet 26 is secured in a cylinder 35 adapted to slide over the nut 14. The jet 26 is held against the under side of an inwardly projecting ring 36 insidethe cylinder 35, by means of a locking ring 37, in which is cut a slot 39 to receive a key for the purpose of securing the jet in the cylinder. The upper surface of the ring 36'fits against the lower surface of the nut 14. The cylinder 35 is locked in place over the nut 14 by means of spring-pressed balls 41, the springs 42 and the balls 41 being contained' in cups 43, screwed into the side of the cylinder 35. The balls 41 fit over the top edge of the nut 14 to hold the cylinder in place. Alternative means for securing the cylinder in place is shown on the left-hand side of Fig. 2. Set screws 44 are screwed into the body of the cylinder and are coned at their ends so as to fit over the top edge of the nut 14. The screws 44 or the cups 43 are knurled, or may be formed with a slot or recess to receive a screw driver or key for the purpose of adjustment or removal. This form of attachment may be used without modification of the means for securing the jet 15 to the pipe 11. Packing rings 16, 40 are used to make tight joints between the jets 15, 26 and the body of the jet fitting or attachment.

The jet 15 is shown as having a number of orifices 29, and the jet 26 only a single orifice 33, the jet 15 thus serving as a pressure retaining member or filter. It will be understood, however, that the output of the jet, either as regards number or size of the filaments spun, can be readily varied, either by using jets 15 and 26 having a difierent number and size of orifices and allowing the jet 15 to serve as the spinning jet while the jet 26 is absent, or by using the jet 15 as a pressure retaining member to reduce wastage during the changing of one jet 26 for another having a different number and size of orifices.

What I claim and desire to secure by Letters Patent is:

1. A device for use in the manufacture of artificial filaments comprising, in combination with an existing jet and a supporting member for carrying said jet, an auxiliary jet and means for attaching said auxiliary jet to the existing jet, said means including a socket-like member adapted to support said auxiliary jet and shaped in conformity with said supporting member so as to be slidingly engageable therewith, and locking means carried by the socket-like member for holding the said members, when interengaged, against disengagement.

2. A device according to claim 1, comprising spring-pressed sliding abutment locking means for holding the said members against disengagement.

3. A device according to claim 1, comprising screw-in plunger locking means for holding the said members against disengagement.

REGINALD HENRY JOHN RILEY. 

